1148
1148 is a year in the 12th century. The Second Crusade failed before Damascus after a siege of four days (Levant).
- Even
- Composite
Where 1148 fits
Why 1148 is special
1148 has a profile because of what happened in it rather than because of any property of the number: the Second Crusade failed before Damascus after a siege of four days (Levant).
1148 is part of
Factors & digit properties
- Divisors (12)
- 1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148
- Prime factorisation
- 2^2 × 7 × 41
- Digit sum
- 14
- Digital root
- 5
Representations
- Decimal
- 1148
- Scientific notation
- 1.148 × 10^3
Roman numerals
M C X L V I I I
MCXLVIII uses the subtractive pair XL: ten before fifty — fifty minus ten.
Binary
1 0 0 0 1 1 1 1 1 0 0
1 × 1,024 + 0 × 512 + 0 × 256 + 0 × 128 + 1 × 64 + 1 × 32 + 1 × 16 + 1 × 8 + 1 × 4 + 0 × 2 + 0 × 1 = 1,148
Octal
2 1 7 4
2 × 512 + 1 × 64 + 7 × 8 + 4 × 1 = 1,148
Hexadecimal
4 7 c
4 × 256 + 7 × 16 + c × 1 = 1,148
Read as powers of two: 1,024 + 64 + 32 + 16 + 8 + 4 = 1,148.
In historical numeral systems
Egyptian
1 lotus, 1 coil of rope, 4 hobbles, 8 strokes
1 × 1,000 + 1 × 100 + 4 × 10 + 8 × 1 = 1,148. The signs are simply repeated and added; where they sit on the line is a matter of layout, not value.
Babylonian
1 corner wedge + 9 vertical wedges (sixties place), 8 vertical wedges (units place)
19 × 60 + 8 = 1148. Places are separated by a space on the tablet, with the higher place written first.
Systems that simply cannot reach this value are left out. Where a script needs a font most readers do not have, the reading is given instead of the glyphs — see number systems for each system in full.
Other mathematical patterns
- Abundant number
- Happy number
- Harshad (Niven) number
Related numbers & connections
1148 is a year in the 12th century, in the 1140s.
Numbers Around Us
- appears inHistorical years
why?
Strength 0.50, confidence "high".
History
In 1148, the Second Crusade failed before Damascus after a siege of four days (Levant).
DocumentedHistoryGeography: LevantPeriod: 1148
Common questions
Is 1148 a prime number?
No, 1148 is not prime.
What are the factors of 1148?
The factors of 1148 are 1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148.
What is 1148 in Roman numerals?
1148 in Roman numerals is MCXLVIII. XL is subtractive: ten before fifty — fifty minus ten. Written additively it would be MCXXXXVIII, which Roman inscriptions used freely — the strict subtractive form is a later convention.
About this page's data
Mathematical facts:computed directly from the number's value — nothing to source or verify externally.
Contextual records: 1 reviewer-confirmed record, sourced and reviewed before publication.
Last reviewed: 15 July 2026